A Two-Step Adaptive Error Recovery Scheme for Video Transmission over Wireless Networks

ln thippaper,weinvestigatethetra"ion ofH.263 video sequencesoverwireIessnetworkswith errorrecoveryprovided by a twostep adaptivehybrid ARQ schemeusingRS codes. Each videoframeis divided into data packets for transmission. For each padset transmission,by usingasimpletable-drivenapproach, thebest RScodeIsselected froma givenset of eodesto minimizethetransmfssionoverhead.Further, an additionaladaptation step is used to guaranteeeertalnQoS requirement. SiuIation resultsshowthat the proposed error recoveryscheme outperformsthe traditional siugle-codeschemesand the single-step error recoveryschemesthanks to its adaptabllityto both the wireless chaunel wuditionand the actualframelossevents. Keywords- Wirelessnetworh, adaptive hybrid ARQ, transmission gain, partial gain, trammission status, pseudo delivery deadline, frame iosp rate.

• Type: Conference
• Year: 2000
• Where: INFOCOM
• Authors: Daji Qiao, Kang G. Shin
• Keywords: Communications, Error Recoveryscheme Outperformsthe, INFOCOM 2000, Single-step Error Recoveryschemesthanks, Twostep Adaptivehybrid Arq